<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function Star(uname, age) {
            this.uname = uname;
            this.age = age;
            this.aa = 123;  
            // console.log(this);
        }

        Star.prototype.abc = 'abc'
        
        new Star();
        Star.prototype.sing = function() {
            // console.log('我是原型上的方法');
        }
        const ldh = new Star();

        // console.dir(Star.prototype, 'Star');

        // const ldh = new Star('刘德华', 18);
        // console.log(ldh.__proto__, 'ldh');
        // console.dir(ldh.__proto__.constructor);


        // 对象原型 __prototype__ 
        // console.log(ldh.__proto__,'ldh');



        //   用于记录该对象引用与哪个对象 
        // console.dir(ldh.__proto__.constructor);

        Star.prototype = {
            constructor: Star,
            sing: function() {
                console.log('我会唱歌');
            },
            movie: function() {
                console.log('我会演电视');
            }
        }
        // console.dir(ldh.constructor);
        // console.dir(Star.prototype.constructor);
        // console.log(ldh.constructor === Star.prototype.constructor);

        
    </script>
</body>
</html> 